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United States Patent | 5,580,127 |
Piretti | December 3, 1996 |
In a chair having a backrest which can be reclined backwardly against the action of spring means, the latter comprises a leaf spring having its central portion operatively connected to the base structure of the chair and its ends connected to two side arms which support the backrest.
Inventors: | Piretti; Giancarlo (Bologna, IT) |
Assignee: | Pro-Cord S.r.l. (Bologna, IT) |
Appl. No.: | 249193 |
Filed: | May 26, 1994 |
May 27, 1993[IT] | TO93A0363 |
Current U.S. Class: | 297/301.3; 297/291; 297/301.5 |
Intern'l Class: | A47C 003/00 |
Field of Search: | 297/291,299,301.1,301.3,301.5,303.3 |
2711211 | Jun., 1955 | Tidcombe | 297/291. |
3136580 | Jun., 1964 | Parrott | 297/304. |
4938532 | Jul., 1990 | Burgess | 297/301. |
5100201 | Mar., 1992 | Becker, III et al. | 297/306. |
Foreign Patent Documents | |||
1471014 | Feb., 1967 | FR | 297/304. |